Electron excitation from ground state to first excited state: Bohmian mechanics method
Song Yang1, Zhao Shuang2, Guo Fu-Ming2, †, , Yang Yu-Jun2, Li Su-Yu‡,
       

(a) Trajectories, (b) energies, and (c) forces of the two Bohmian particles whose initial positions are 2.91 (solid black curves) and 0.01 (solid red curves) during the period e–g shown in Fig. 7. The solid, dashed, and dotted curves in panel (c) denote the classical, quantum, and total forces.